Try this guys

first is how to get your wife or g/f to be a slut

treat her to nice things like going out to dinner buy her new clothes to wear out sexxy stockings and heels and i nice short dress or skirt
remember to get her to fuck you or suck you off in the car or outside is a must
next is to talk about things like how much it turns you on if she would fuck a stranger when you are fucking
then take photos and videos of you both outside fucking once you get her use to being outside fucking on cam you hen move things a head by saying lets try to find a guy to join us